To cite package ‘OptimModel’ in publications use:

Novick S (2025). OptimModel: Perform Nonlinear Regression Using 'optim' as the Optimization Engine. R package version 2.0-3, https://CRAN.R-project.org/package=OptimModel.

Corresponding BibTeX entry:

  @Manual{,
    title = {OptimModel: Perform Nonlinear Regression Using 'optim' as
      the Optimization Engine},
    author = {Steven Novick},
    year = {2025},
    note = {R package version 2.0-3},
    url = {https://CRAN.R-project.org/package=OptimModel},
  }